Photo: Nelro2 · Public domainThe climate in Rockwood sits close to the middle of Canadian towns
About 851 mm of rain and snow falls in a typical year; July afternoons reach 25.4°C and January nights drop to −10.7°C. Its January nights stay gentler than in 64% of Canadian towns. A year here swings 36°C from midwinter lows to midsummer highs. An umbrella or a shovel earns its place on about 115 days a year with 1 mm or more.
These are not Rockwood’s own readings: ECCC keeps no normals there, so the page uses Elora, 18 km north-west.
A year in Rockwood at a glance
Each month’s typical high and low, in °C.
What stands out about Rockwood’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Rockwood feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 156 frosts and 116 warm days a year
The frost season runs October to May, and January freezes nearly every night. Some 8 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 851 mm a year
July brings the most rain and snow; February, the least.
Rain and snow by month
Millimetres
ECCC’s Elora normals leave precipitation out; the figures here come from Kitchener/Waterloo, 19 km away.
About 115 cm of snow a year
The snow season runs November to April; January brings the most, about 32 cm.
Snowfall by month
Centimetres
Snowfall: Toronto Pearson (Airport), 49 km away (Elora records no complete year of it).
Heating a home in Rockwood
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The count adds up, day by day, how far the mean temperature falls short of 18°C. Over a year, a home here needs less heating than 66% of Canadian towns.
Living with Rockwood’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →The wind chill passes −20 on about 27 days in a normal year.
About 44 days a year feel above 30 on the humidex.
For the weather that does damage, from ice storms to floods, see Rockwood’s hazards page.
Flood & hazards →ECCC’s normals location: Elora
ECCC builds the Elora normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 18 km north-west |
| Station altitude | 376 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Kitchener/Waterloo, 19 km |
| Snowfall from | Toronto Pearson (Airport), 49 km |
| Coldest reading, 1991–2020 | −31.2°C |
| Hottest reading, 1991–2020 | 34.8°C |
| Average wind | 14.2 km/h on average, most often from the west |
| Next-nearest location | Kitchener/Waterloo, 19 km |
How Rockwood compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Rockwood’s own would show the same figures).
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Rockwood Elora | 25.4°C | −10.7°C | 851 mm |
| Guelph 5.3 km · Kitchener/Waterloo | 26.6°C 1.2°C warmer | −10.3°C about the same | 851 mm |
Rockwood weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −3.1°C | −10.7°C | −6.9°C | 66 mm | 32 cm |
| February | −2.4°C | −11.0°C | −6.7°C | 46 mm | 28 cm |
| March | 3.1°C | −6.0°C | −1.5°C | 57 mm | 17 cm |
| April | 10.9°C | 0.3°C | 5.6°C | 81 mm | 5 cm |
| May | 18.3°C | 6.3°C | 12.3°C | 80 mm | under 1 cm |
| June | 23.2°C | 11.4°C | 17.3°C | 81 mm | 0 cm |
| July | 25.4°C | 13.5°C | 19.5°C | 96 mm | 0 cm |
| August | 24.6°C | 12.6°C | 18.6°C | 67 mm | 0 cm |
| September | 21.0°C | 8.9°C | 15.0°C | 75 mm | 0 cm |
| October | 13.4°C | 3.4°C | 8.5°C | 71 mm | under 1 cm |
| November | 6.2°C | −1.5°C | 2.4°C | 75 mm | 9 cm |
| December | 0.0°C | −6.3°C | −3.3°C | 55 mm | 24 cm |
| Year | 11.7°C | 1.8°C | 6.7°C | 851 mm | 115 cm |
From −27.5°C to 26.4°C: March’s coldest and warmest days since 1991
Year to year, February varies most (a standard deviation of 3.1°C around −6.7°C) and June least (1.0°C).
Where Rockwood’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Elora, the closest ECCC location with twelve months of temperature normals.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Rockwood’s climate
How warm does Rockwood get in summer?
Afternoons average 25.4°C in July, the warmest time of year.
How cold does Rockwood get in winter?
Expect nights around −11.0°C in February; no month is colder.
How much rain and snow does Rockwood get?
The yearly total is about 851 mm. July gets 96 mm, the most of any month; February gets 46 mm, the least.
Are these figures for Rockwood itself?
Not directly: Rockwood has no ECCC normals of its own, and Elora stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Rockwood →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).